Quiz 6

Question 1

Answer 1

A. Round Seg

B. Flat Top

C. Ultex A *

D. Ribbon Seg

Question 2

Which type of bifocal has the least image jump?

Answer 2

A. FT 25

B. Round 22

C. Ultex A

D. Executive *

Question 3

Excessive prism base down will cause the client to see:

Answer 3

A. the floor appears as if concave

B. as if they are standing in a hole and walking uphill

C. vertical objects as being taller than they are

D. all of the above *

Question 4

When light strikes a prism, it will deviate toward the ________________ while the image will be displaced toward the ______________.

Answer 4

A. Apex/Base

B. Apex/Apex

C. Base/Apex *

D. Base/Base

Question 5

The two ways a prism must be expressed in relationship to a prescription are:

Answer 5

A. prism axis, prism decentration

B. prism dioptric power, base direction *

C. amount of decentration, power of lens

D. power in 90th meridian, base direction

Question 6

Answer 6

A. X = 1.7^ BU Y = 4.7 BO

B. X = 4.7^ BO Y = 1.7^ BD *

C. X = 5.0^ BO Y = 5.0^ BD

D. X = 1.7^ BI Y = 4.7^ BO

Question 7

Which type of bifocal has the greatest thickness?

Answer 7

A. FT 25

B. Round 22

C. Ultex A

D. Executive *

Question 8

Answer 8

A. Baseball lens

B. Round Seg *

C. Flat Top

D. Ribbon Seg

Question 9

For the following, calculate the amount of image jump the client will experience:

Round 28 bifocal, Add: +1.50
Image Jump=

Answer 9

A. 2.1 prism diopters *

B. 21 prism diopters

C. 4.2 prism diopters

D. 5 prism diopters

Question 10

Answer 10

A. 5 prism diopters at 150 degrees

B. 3.6 prism diopters at 136 degrees

C. 5 prism diopters at 150 degrees

D. 3.6 prism diopters at 124 degrees *

Question 11

Image jump of a bifocal add causes the image to jump:

Answer 11

A. Up *

B. Down

C. In

D. Out

Question 12

For the following, calculate the amount of image jump the client will experience:

Ultex A bifocal, Add: +2.00
Image Jump=

Answer 12

A. .5 prism diopters

B. 38 prism diopters

C. .45 prism diopters

D. 3.8 prism diopters *

Question 13

For the following, calculate the amount of image jump the client will experience:

FT 25 bifocal, Add: +2.50
Image Jump=

Answer 13

A. 12.5 prism diopters

B. 1.25 prism diopters *

C. .125 prism diopters

D. 1.50 prism diopters

Question 14

The direction of the base direction for prisms is expressed in degrees from:

Answer 14

A. 0-360 *

B, 0-180

C. 0-270

D. 90-180

Question 15

Answer 15

A. Round Seg

B. Flat Top

C. Executive

D. Ribbon Seg *

Question 16

Which type of bifocal has the most image jump?

Answer 16

A. FT 25

B. Round 22

C. Ultex A *

D. Executive

Question 17

For the following, calculate the amount of image jump the client will experience:

Executive bifocal, Add: +1.75
Image Jump=

Answer 17

A. 4.0 prism diopters

B. 2.5 prism diopters

C. zero image jump *

D. 3.8 prism diopters

Question 18

Answer 18

A. Baseball lens

B. Round Seg

C. Flat Top

D. Executive *

Question 19

Prism base 45 degrees before the right eye is the same as prism base:

Answer 19

A. up and out

B. up and in *

C. down and out

D. down and in

E. cannot be determined

Question 20

Excessive prism base up will cause the client to see:

Answer 20

A. the floor appears convex *

B. the floor appears concave

C. vertical objects as being taller than they are

D. all of the above

Question 21

Write the TRP from the following RX:

OD: +1.00 - 1.00 x 90
OS: +1.25 -0.75 x 65
Add: +2.50 o.u.

TRP: ?

Answer 21

A. OD: + 3.50
OS: +3.75

B. OD: +1.00 -1.00 x 90
OS: +1.25 -0.75 x 65

C. OD: +2.50 -1.00 x 90
OS: +2.50 -0.75 x 65

D. OD: +3.50 -1.00 x 90
OS: +3.75 -0.75 x 65 *

Question 22

Transcribe the following RX into an intermediate prescription:

OD: +3.25 - 0.50 x 35
OS: +1.50 - 1.50 x 170
Add: +2.75 o.u.

Intermediate RX: ?

Answer 22

A. OD: +2.75
OS: +2.75

B. OD: +1.37
OS: +1.37

C. OD: +4.62 -0.50 x 35
OS: + 2.87 -1.50 x 170 *

D. OD: +4.62 -1.50 x 170
OS: +2.87 -1.50 x 35

Question 23

Answer 23

A. Baseball lens

B. Double D lens *

C. Quadrafocal

D. Double Executive

Question 24

Answer 24

A. Round Seg

B. Flat Top *

C. Executive

D. Ribbon Seg

Question 25

The 2nd quadrant, in reference to meridian notation, has degrees ranging from:

Answer 25

A. 180-270

B. 0-90

C. 90-180 *

D. 270-360